Welcome to the club!
Finding an "Untouched and alive" (^5 Daniel Koontz!) GMC is a tough bill to fill anymore. Too many kids with big dreams, no sense, and no budget start cutting then sell a bucket of parts a year later.
Keep up the search and you'll turn something up though. One thing you may not have thought of is Bing or Google earth. Just start from your street and work your way out. You never know what's sitting in someone's backyard or field somewhere. I found a 63 Chevy that way right down the street. We had a good talk about old iron
Also, keep an eye on the Marketplace forum here. Lots of guys like kcchampagne (sp) are great at posting up craigslist and ebay finds that you might miss otherwise.
You can ship just about anywhere in the country to your front door (or the nearest Wal-Mart parking lot) for about $1500 too so don't turn something down if it's just out of state. It may be a diamond you'll kick yourself for passing up!
Good luck!